I mean, the batteries seem good, but for what they say they are. Led flashlights, toys and small appliances. I would not say no on buying from amazon, but if you think amazon is safer than ebay or any other online shop, is wrong. There are different sellers on amazon, that amazon itself can't really know what quality they sell. Actually sometimes you will see people complain even about the amazon approved purchases.
TO understand how underhanded they can be check this "VTC6". It is calling them "Authentic", without mentioning they are murata anywhere and then end up saying it's for flashlights. Not only that, but the description is:
The product has inherent risk of flame. It is not designed for vaping or any device without protective precaution. Users are fully responsible for damages resulted from improperly handling.
Authentic VTC6 that are not designed for vaping. Right. Trying their best to scam people into buying these, while making sure to cover their behind, when the customer will complain about the crappy quality.